import java.util.Scanner;

/**
   Reads a string and prints out all vowels contained in that string.
   Vowels are A E I O U a e i o u. 

   Input: the value of s, a string
   Output: a string containing all the vowels in s,
      in the order in which they appear in s
*/
public class GetVowels
{
   public static void main(String[] args)
   {
      String r = "";
      
      Scanner in = new Scanner(System.in);
      String s = in.nextLine();

      // your work here
      String t = "aeiouAEIOU";
      for(int i=0;i<s.length();i++){
          if(t.indexOf(s.charAt(i))>=0){
              r = r + s.charAt(i);
          }
      }
      System.out.println(r);
   }
}